Combined dividers and compasses.



PATENTED DEC. 19, 1905.

J. F. GLUTTER. I COMBINED DIVIDERS AND OOMPASSES.

APPLICATION FILED MAR 15 7905 Wihwoou UNITED STATES PATENT OFFICE.

JOSEPH F. OLUTTER, OF OMAHA, NEBRASKA.

COMBINED DIVIDERS AND COMPASSES.

Specification of Letters Patent.

Patented Dec. 19, 1905.

Application filed March 15,1905. Serial No. 250,301.

an exceedingly simple, inexpensive, durable,

and efficient instrument of the character stated.

Another object of the invention resides in the provision of an instrument of the character named wherein the parts may be easily and quickly adjusted for purposes obvious to those skilled in the particular art to which the invention belongs.

A still further object of the invention resides in a construction and arrangement whereby the points are always kept perpendicular to the work.

With these and other objects in view the present invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that changes in the form, proportion, size, 'and minor details may be made within the scope of the claims without departing from the spirit or sacrificing any of the advantages thereof.

In the drawings, Fi ure 1 is a side elevation of the invention, lustrating the base in section. Fig. 2 is another view of the base, illustrating one manner in which the base may be hollowed or cut out to provide for the possibility of the operator determining the exact center at which he wishes to place the point of the post of instrument. Fig. 3 is an inverted plan view of the base.

Referring now more particularly to the accompanying drawings, the reference character 1 designates a base having a central vertical bore 2 leading into a hollow or cut-out portion 3, arranged in the bottom thereof, there being a V-shaped or other opening 4 leading from one side of the base into the hollowed or cut-out portion 3, the latter feature being clearly shown in Fig. 3 of the drawings.

Loosely fitted in the bore 2 of the base 1 is an upright or post 5, having its lower end pointed, the upper end thereof being provided with a stop 6, designed to limit, if necessary, the upward movement of the clamparranged for sliding movement upon the post 5, the same being clamped in adjusted positions through the instrumentality of a common clamping arrangement 8. k

The clamping-block 7, alluded to above, is provided with laterally-projecting pairs of upper and lower ears 9 and 10, respectively, the corresponding pairs of cars receiving the upper and lower bars, arms, or other elements ing-block 7, which latter is constructed and '11 and 12, each of which is pivoted between the corresponding ears through the medium of pivot-pins 13. rods, or the like, 11 and 12, are each pivoted to an equalizing-bar or other element 14 by means of the pivot pins 14 the equalizing element being provided with an eye 15, extending therethrough from front to rear, through which latter projects .a segment or its equivalent 16, whose inner end is mounted in the slot 17 of the lower arm or other element 12 and retained therein by means of the pin 18, there being a thumb-screw or its equivalent 19, designed to pierce one side of the equalizing element 14 and pierce or otherwise engage the segment or its equivalent 16 for the purpose of holding the different parts rigidly during operation.

The equalizing element 14 is provided with a short extension 20, which is adjustably associated therewith and held in adjusted positions through the instrumentality of a thumb-screw or its equivalent 21, the extension being designed to adjustably receive and retain the point 22, which latter is held within the socket of the extension 20 through the medium of the thumb-screw or other element 23, all of which is clearly shown in the accompan ing drawings. a

Fig. 1 ilustrates the arrangement of the device ready for scribing or otherwise forming a circle of acertain diameter, and in order to scribe or otherwise form a circle of larger or smaller diameter it is simply necessary to raise or lower the clamping-block 7 upon the upright or post 5 and to adjust the equalizing element 14 with relation to the segment 16, as well understood.

My improved instrument is of such character as to be used as a divider, compass, scriber, caliper, or compass-caliper, the base 1 of the instrument having a hollow in its bottom and provided with an opening leading from the side thereof into the hollow por- The free ends of the bars,

tion to enable the operator to determine the eXact center at which he wishes to place one point of the instrument and to permit of the holding of the one point-that is, the post or uprightto the center during the scribing or method of forming a circle or when in the act of using the instrument otherwise, as for purposes of determining diameters.

It will be observed that there is not a single flat or coiled spring associated with my improved device and that there are but few parts embraced in the entire structure.

What is claimed is 1. An instrument of the character de scribed, comprising a post; a clamping-block mounted'for sliding movement upon the post; a pair of arms mounted one above the other and connected to the said block, an equalizing-bar connected to the outer ends of the said arms; and a point connected to the equaliZing-bar.

2. An instrument of the character described, comprising a post; a clamping-block mounted for sliding movement upon the post; a pair of arms mounted one above the other and connected to the said block; an equal izing-bar connected to the outer ends of the said arms; an arcuate arm adjustably associated with the equalizing-bar and one of said 1egrms; and a point carried by the equalizing- 3. An instrument of the character described, comprising a post; a clamping-block mounted for sliding movement upon the post, the clamping-block having laterally-projecting upper and lower pairs 01 ears upper and lower arms pivotally mounted within corresponding pairs of said ears; an equalizing-bar pivotally connected to the outer ends of said arms; an arcuate arm arranged between the lower arm and the equalizing-bar and a point carried by the latter.

4. An instrument of the character described, comprising a base having its bottom out out and an opening leading from the side thereof into said opening; a post mounted within the base and provided with a pointed end extending into the hollow of the latter; a clamping-block mounted for sliding movement upon the post, the clamping-block being provided with upper and lower pairs of laterally-projecting ears; upper and lower arms pivotally mounted within corresponding pairs of ears; an equalizing-bar pivotally connected to the outer ends of said arms, the equalizing-bar being provided with an eye between the connections of the arms therewith; an arcuate arm connected with the lower one of said arms and projecting through the said eye of the equalizing-bar; a thumbscrew piercing the equalizing-bar and engaging the said arcuate arm and a point adjustably connected to the lower end of the equalizing-bar.

In testimony whereof I am); my signature in presence of two witnesses.

JOSEPH F. CLUTTER.

Witnesses:

CHESTER PEERMAN, ROYAL A. STREETER. 

